20856948

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 57456000

約数和(自身を除く): 36599052

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 79, 84, 98, 147, 158, 196, 237, 294, 316, 449, 474, 553, 588, 898, 948, 1106, 1347, 1659, 1796, 2212, 2694, 3143, 3318, 3871, 5388, 6286, 6636, 7742, 9429, 11613, 12572, 15484, 18858, 22001, 23226, 35471, 37716, 44002, 46452, 66003, 70942, 88004, 106413, 132006, 141884, 212826, 248297, 264012, 425652, 496594, 744891, 993188, 1489782, 1738079, 2979564, 3476158, 5214237, 6952316, 10428474, 20856948]

約数ペア:

[(1, 20856948), (2, 10428474), (3, 6952316), (4, 5214237), (6, 3476158), (7, 2979564), (12, 1738079), (14, 1489782), (21, 993188), (28, 744891), (42, 496594), (49, 425652), (79, 264012), (84, 248297), (98, 212826), (147, 141884), (158, 132006), (196, 106413), (237, 88004), (294, 70942), (316, 66003), (449, 46452), (474, 44002), (553, 37716), (588, 35471), (898, 23226), (948, 22001), (1106, 18858), (1347, 15484), (1659, 12572), (1796, 11613), (2212, 9429), (2694, 7742), (3143, 6636), (3318, 6286), (3871, 5388)]